PSLE Neave had 11 more five-dollar notes than ten-dollar notes at first. He exchanged $100 worth of ten-dollar notes for five-dollar notes. How many more five-dollar notes than ten-dollar notes did Neave have after the exchange?
Number |
$5 |
$10 |
Before |
1 u + 11 |
1 u |
Change |
+ 20 |
- 10 |
After |
1 u + 11 + 20 |
1 u - 10 |
Number of ten-dollar notes that Neave exchanged into five-dollar notes
= 100 ÷ 10
= 10
Number of five-dollar notes that Neave received from the exchange
= 100 ÷ 5
= 20
Number of more five-dollar notes than ten-dollar notes
= 11 + 20 + 10
= 41
Answer: 41